Philipp Marx
Founder of RattleStork
Philipp Marx is a founder of RattleStork and a former international sperm donor. He writes from first-hand experience about sperm donation, co-parenting, and alternative paths to parenthood.
Before founding RattleStork, Philipp donated sperm in several countries. That experience showed him how differently people approach donor conception, trust, personal boundaries, and co-parenting.
At RattleStork, he combines that perspective with publicly available sources and practical guidance for donors, recipients, and prospective co-parents. His personal experience is not a substitute for medical or legal advice.
Articles by this author
Total published articles:220
Vasectomy reversal: procedure, success chances, costs and alternatives
A vasectomy reversal is microsurgery that reconnects the vas deferens after a vasectomy.
Tubal reversal after sterilisation: chances, procedure, and alternatives
Tubal reversal is surgery that aims to make the fallopian tubes open again after sterilisation so that pregnancy can be possible again.
Fertility treatment cost in India 2026: IUI, IVF, ICSI, medicines, package pricing, and city-level differences
Fertility treatment in India is rarely only a medical decision and is often a financial planning decision as well.
Paperwork after birth in India: checklist, timelines, and applications in 2026
After birth, recovery, lack of sleep, and new responsibility all begin at once.
Polycystic ovary syndrome (PCOS): symptoms, diagnosis, treatment, and planning a pregnancy
PCOS is a common hormonal and metabolic pattern that can affect your periods, skin, weight, and fertility.
Chlamydia in 2025 - Impact on Fertility, Symptoms & Effective Prevention
Chlamydia is the most common curable sexually transmitted infection (STI) .
Fertility & Religion 2025: How faith traditions view sperm donation, egg donation, IVF/IUI and surrogacy
This overview explains how major faith traditions today approach sperm donation - with attention to origins, lineage, openness versus anonymity, family roles and identity rights.
Worldwide birth rate decline: fertility crisis, reasons, and solutions
A declining birth rate means that the average number of children per woman (the total fertility rate) has been falling for decades in many countries.
Female biological clock - fertility from 35, egg reserve and egg quality
Fertility changes gradually: it becomes measurable in the early 30s, accelerates from 35 and is clearly reduced after 40.
Stopping the pill: how to plan the transition safely and without panic
If you want to stop the pill, a clear plan helps more than extreme advice.
Female infertility: causes, evaluation, and treatment explained clearly
When pregnancy does not happen despite trying to conceive, a clear plan helps more than guesswork.
Male infertility: causes, diagnostics and modern treatment options
Not being able to start a family is one of the most stressful phases for many couples - and yet the idea that “the problem is usually with the woman” persists.
Delaying menopause: evidence-based strategies for diet and lifestyle
Many people wonder whether you can delay menopause and what really affects the timing.
Get pregnant quickly: What really helps and when to see a doctor
If you want to get pregnant quickly, timing matters much more than internet myths.
Preterm birth: causes, warning signs, and treatment
A preterm birth is a birth before 37 completed weeks of pregnancy.Miscarriage 2026: causes, warning signs, treatment, and rebuilding confidence
A miscarriage is a pregnancy loss in the first weeks or months and can be medically and emotionally exhausting.
The biological clock in men: How age reduces sperm quality and fertility
Male fertility is not timeless.
Pavel Durov & the Serial-Donor Debate 2025 - When One Sperm Donation Means 50, 100 or 1,000 Children
In June 2025, Telegram founder Pavel Durov astonished the public when he revealed that he has already fathered more than 100 children -six within committed relationships, but the majority through sperm donations across twelve countries.
How do I explain to my child that they were conceived through sperm donation?
Sperm donation means using sperm from a donor to make a pregnancy possible.
The History of Sperm Donation - From Secret Experiments to the DNA-Test Era
Sperm donation is now routine for single mothers, LGBTQ+ couples and heterosexual couples facing male infertility.
At-Home DNA Kits 2025 - Your Guide to Genes, Law & Privacy in India
A home DNA kit now costs barely more than a Saturday night at the multiplex, yet promises answers like Where did my ancestors live?
Sperm Donation in Islam 2025: Nasab, Marriage, Donor Anonymity, Legal Schools & Country Practice
Whether sperm donation is permissible in Islam is assessed differently across legal schools and countries.